[br][img width=453.4560375330684,height=326.8237637853253]https://lh7-us.googleusercontent.com/j9lqBVGTaf2nHzLGvAkGqpqYdZkcMeTQlbiIAUxB0c_MXxBvHCBZx06K-Grr1yncXkSD8_ZtmJedAflYuZ1jRcAolFfK0yM5Egzsc8r1qOMpijqHIUAG-rajyf7OemibPR5KMzFpdclyl49jtMqQaQs[/img][br]Controleer je constructie: [math]\beta\approx60°[/math] en e [math]\approx[/math] 6 cm

[br][br][img width=420.41998429199003,height=466.6703786191538]https://lh7-us.googleusercontent.com/-Jtp_Le0IwlSq8uizCl_KhfNH39VkraVuVrrFsjEMhi7SvxwBUpipkuVeWZ-SKPPB3iJyyKCI7bB3vJLMiZff2lfmg85S8-fjXiay2CKdOV_fF6ipLjWflwhCt478IdM8GC1yYX6aoW316FIpBetrtM[/img][br]Controleer je constructie: a [math]\approx[/math] 10,8 cm